Current Air Quality Data Map for PM2.5

View the latest hourly PM 2.5 (Fine Particulate Matter) data.

PM 2.5 Legend

Station Summary Tip

Click on the white triangle to see the next station summary data.

Station Summary Tip


The maximum acceptable level for PM2.5 is: 25 µg/m3 (micrograms per cubic metre) over a 24 hour average period.

Read more about the province's Air Quality Objectives and Standards.


  • PM2.5 = fine particles with a diameter of 2.5 microns (millionths of a metre)
  • PM10 = small particles with a diameter of 10 microns
  • O3 = ozone
  • NO2 = nitrogen dioxide
  • SO2 = sulphur dioxide
  • ppb = parts per billion
  • ppm = parts per million
  • µg/m3 = micrograms per cubic metre
  • N/A = Readings are monitored but are not available at this time.

More Information

To access the older version of the interactive map, visit the AQHI Readings Application (requires Adobe Flash Plugin).

There are more ways to find an air monitoring station and it's latest data.